Cell Biology Division, Department of Biology, Friedrich-Alexander University, Staudtstr. 5, 91058, Erlangen, Germany.
Ecotoxicology. 2012 Oct;21(7):1957-64. doi: 10.1007/s10646-012-0930-3. Epub 2012 May 30.
Chronic toxicity of the common laundry detergent Ariel on the freshwater alga Euglena gracilis was investigated by growing the alga in a medium containing the detergent for 7 days. Cell density, motility, swimming velocity, gravitactic orientation, cell shape, photosynthesis and concentration of light-harvesting pigments were used as end point parameters for the assessment of toxicity. Cell density was significantly reduced at a concentration of 1 mg l(-1) or above. Among the other tested parameters, with the exception of cell shape, gravitaxis and chlorophyll b, all were adversely affected by the detergent at concentrations exceeding 1 mg l(-1). It is concluded that long-term (7-days) exposure to the detergent caused significant toxicity to E. gracilis. Furthermore, long-term tests with E. gracilis can be used as sensitive indicator for the toxicity assessment of laundry detergents in aquatic environments.
研究了普通洗衣粉 Ariel 对淡水藻类眼虫 Euglena gracilis 的慢性毒性，方法是在含有洗衣粉的培养基中培养藻类 7 天。细胞密度、运动性、游动速度、向地性、细胞形状、光合作用和光捕获色素浓度被用作毒性评估的终点参数。在浓度为 1mg/L 或更高时，细胞密度显著降低。在测试的其他参数中，除了细胞形状、向地性和叶绿素 b 之外，所有参数在浓度超过 1mg/L 时均受到洗衣粉的不利影响。结论是，长期（7 天）暴露于该洗涤剂会对 E. gracilis 造成显著毒性。此外，用 E. gracilis 进行长期试验可作为水生环境中洗衣粉毒性评估的敏感指标。
